[mkgmap-dev] Please help with news about new DEM options

Sat Feb 3 08:29:42 GMT 2018

Having read the explanation of --dem-dists I think that the default for when the option is not provided needs to be changed. The explanation says "mkgmap tries to determine a reasonable value based on the resolution found in the *.hgt files", but it also says "for gps devices you need one for each resolution given with the --levels option". It seems to me the default behaviour should be to produce a map suitable for GPS devices, and hence it should determine a set of values. I suggest renaming this option --dem-distances as its meaning is clearer. Also I suggest capitalising GPS.

I suggest renaming --overview-dem-dist to --dem-overview-distance so that all the DEM options begin with --dem. I also suggest moving the explanation to immediately after --dem-dists. As --overview-levels allows multiple values, does the DEM overview level also allow multiple levels (in which case the name needs to be --dem-overview-distances)? If not, we need a mention why only a single value is needed.

For the --dem-poly option, I suggest adding a mention that the areas.poly file produced by splitter can be used.

Hope this helps,
Mike
-----Original Message-----
From: Carlos Dávila [mailto:cdavilam at orangecorreo.es] 
Sent: 02 February 2018 21:33
To: mkgmap-dev at lists.mkgmap.org.uk
Subject: Re: [mkgmap-dev] Please help with news about new DEM options

El 30/01/18 a las 09:41, Gerd Petermann escribió:
> Hi all,
>
> with r4093 I've merged the dem-tdb branch into trunk. I think it would be good to mention this in the
> "Latest news" on [1] , maybe with one or two screen shots, but I have no idea how to write this "from a users view".
> Do we need a how-to that describes the sources for hgt files and maybe more about the new options?
> It would be great if somebody could help with that.
>
> Gerd
>
> [1] http://www.mkgmap.org.uk/
>
>
>
Attached patch is not exactly what you asked for, but I hope it adds 
some useful information about DEM.